862 



Lentibulariaceae 



Epifagus 



7792. EPIFAGUS Nutt. 



1. Epifagus virginiana (L.) Bart. (Leptamnium virginianum (L.) 



Raf.) BEECHDROPS. Map 1882. Frequent to common in all parts of the 

 state where the beech tree grows. It is parasitic on the roots of the beech 

 and is not found elsewhere. 



N. B. and Ont. to Wis., southw. to Fla. and La. 



264. LENTIBULARIACEAE Lindl. Bladderwort Family 



7901. UTRICULARIA L. 1 



Scapes naked (except some small, scaly bracts). 

 Flowers all purplish. 



Stems 3-9 dm long, free-floating with copious whorled leaves; scapes 2-4-flowered. 



1. 17. purpurea. 



Stems 0.5-3 dm long, rooting in marly mud or sand and not free-floating; scapes 

 with a solitary flower and appearing as a single plant with a few, very small 



leaves at the base, these rarely bladder-bearing 2. U. resupinata. 



Flowers yellowish. 



Bracts at the base of the pedicel accompanied by a pair of bractlets; calyx closing 



in fruit 3. U. comuta. 



Bracts at the base of the pedicel not accompanied by bractlets; calyx not closing 

 in fruit. 

 Stem creeping on the bottom in shallow water; corolla 4-12 mm long. 

 Pedicels ascending in fruit; spur and palate of the corolla conspicuous. 



Segments of the leaves capillary; upper lip of the corolla equaling the lower 



one which is about 6 mm long 4. U. gibba. 



Segments of the leaves linear, flat, the margins bristle-toothed; bladders 

 on separate branches; upper lip of the corolla about half as long as the 



lower one which is 10-15 mm long 5. U. intermedia. 



Pedicels recurved in fruit; spur a mere sac; palate obsolete; corolla 4-8 mm 



l on g 6. U. minor. 



Stem submerged or free-floating; corolla 14-20 mm long 7. U. macrorhiza. 



Scapes with a whorl of elongated, floating bladders formed of inflated petioles; flowers 



yellow 8 - U- radiata. 



1 Dr. J. H. Barnhart, of the New York Botanical Garden, has named nearly all of 

 my specimens. 



